Some people interpret ESU security updates as sufficient "support" that's fine; see MS webpage on ESU - "Windows 10 support has ended".
https://www.microsoft.com/en-us/windows/extended-security-updates
TT Desktop revenue is about $200mil. Intuit total revenue is about $20bn. So yes, Win 10 is less than 1%.
TT has 35mil online returns, 4mil desktop users (declining 5% annually anyway). So of a total user base around 40mil, from Intuit perspective the final impact to the user base (Folks on Win 10 who finally refuse to upgrade over the next few months and move to competitor), will be a low %.
https://investors.intuit.com/news-events/press-releases/detail/1266/intuit-reports-strong-fourth-qua...
$200mil revenue and 4mil users is nothing to sniff at as a standalone business they would make different decisions, but it's small game in the overall Intuit behemoth.
